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  <title>Returns the current key</title>

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</div><hr /><div id="tokyotyrantquery.key" class="refentry">
 <div class="refnamediv">
  <h1 class="refname">TokyoTyrantQuery::key</h1>
  <p class="verinfo">(PECL tokyo_tyrant &gt;= 0.1.0)</p><p class="refpurpose"><span class="refname">TokyoTyrantQuery::key</span> &mdash; <span class="dc-title">Returns the current key</span></p>

 </div>

 <div class="refsect1 description" id="refsect1-tokyotyrantquery.key-description">
  <h3 class="title">说明</h3>
  <div class="methodsynopsis dc-description">
   <span class="modifier">public</span> <span class="type">string</span> <span class="methodname"><strong>TokyoTyrantQuery::key</strong></span>
    ( <span class="methodparam">void</span>
   )</div>

  <p class="para rdfs-comment">
   Returns the current key. Part of the Iterator interface
  </p>
 </div>


 <div class="refsect1 parameters" id="refsect1-tokyotyrantquery.key-parameters">
  <h3 class="title">参数</h3>
  <p class="para">此函数没有参数。</p>
 </div>


 <div class="refsect1 returnvalues" id="refsect1-tokyotyrantquery.key-returnvalues">
  <h3 class="title">返回值</h3>
  <p class="para">
   Returns the current key and throws TokyoTyrantException on error
  </p>
 </div>


 <div class="refsect1 examples" id="refsect1-tokyotyrantquery.key-examples">
  <h3 class="title">范例</h3>
  <p class="para">
   <div class="example" id="example-2169">
    <p><strong>Example #1 TokyoTyrantQuery iterator example</strong></p>
    <div class="example-contents">
<div class="phpcode"><code><span style="color: #000000">
<span style="color: #0000BB">&lt;?php<br /></span><span style="color: #FF8000">/*&nbsp;Connect&nbsp;to&nbsp;a&nbsp;table&nbsp;database&nbsp;*/<br /></span><span style="color: #0000BB">$tt&nbsp;</span><span style="color: #007700">=&nbsp;new&nbsp;</span><span style="color: #0000BB">TokyoTyrantTable</span><span style="color: #007700">(</span><span style="color: #DD0000">"localhost"</span><span style="color: #007700">,&nbsp;</span><span style="color: #0000BB">1979</span><span style="color: #007700">);<br /><br /></span><span style="color: #FF8000">/*&nbsp;Add&nbsp;rows&nbsp;*/<br /></span><span style="color: #0000BB">$tt</span><span style="color: #007700">-&gt;</span><span style="color: #0000BB">put</span><span style="color: #007700">(</span><span style="color: #0000BB">null</span><span style="color: #007700">,&nbsp;array(</span><span style="color: #DD0000">"column1"&nbsp;</span><span style="color: #007700">=&gt;&nbsp;</span><span style="color: #DD0000">"some&nbsp;data"</span><span style="color: #007700">,&nbsp;</span><span style="color: #DD0000">"column2"&nbsp;</span><span style="color: #007700">=&gt;&nbsp;</span><span style="color: #DD0000">"something&nbsp;here"</span><span style="color: #007700">));<br /></span><span style="color: #0000BB">$tt</span><span style="color: #007700">-&gt;</span><span style="color: #0000BB">put</span><span style="color: #007700">(</span><span style="color: #0000BB">null</span><span style="color: #007700">,&nbsp;array(</span><span style="color: #DD0000">"column1"&nbsp;</span><span style="color: #007700">=&gt;&nbsp;</span><span style="color: #DD0000">"more&nbsp;data"</span><span style="color: #007700">,&nbsp;</span><span style="color: #DD0000">"column2"&nbsp;</span><span style="color: #007700">=&gt;&nbsp;</span><span style="color: #DD0000">"best&nbsp;data&nbsp;this&nbsp;far"</span><span style="color: #007700">));<br /></span><span style="color: #0000BB">$tt</span><span style="color: #007700">-&gt;</span><span style="color: #0000BB">put</span><span style="color: #007700">(</span><span style="color: #0000BB">null</span><span style="color: #007700">,&nbsp;array(</span><span style="color: #DD0000">"column1"&nbsp;</span><span style="color: #007700">=&gt;&nbsp;</span><span style="color: #DD0000">"again&nbsp;data"</span><span style="color: #007700">,&nbsp;</span><span style="color: #DD0000">"column3"&nbsp;</span><span style="color: #007700">=&gt;&nbsp;</span><span style="color: #DD0000">"foobar&nbsp;here"</span><span style="color: #007700">));<br /></span><span style="color: #0000BB">$tt</span><span style="color: #007700">-&gt;</span><span style="color: #0000BB">put</span><span style="color: #007700">(</span><span style="color: #0000BB">null</span><span style="color: #007700">,&nbsp;array(</span><span style="color: #DD0000">"column45"&nbsp;</span><span style="color: #007700">=&gt;&nbsp;</span><span style="color: #DD0000">"random&nbsp;data"</span><span style="color: #007700">,&nbsp;</span><span style="color: #DD0000">"column2"&nbsp;</span><span style="color: #007700">=&gt;&nbsp;</span><span style="color: #DD0000">"something&nbsp;along&nbsp;the&nbsp;lines"</span><span style="color: #007700">));<br /></span><span style="color: #0000BB">$tt</span><span style="color: #007700">-&gt;</span><span style="color: #0000BB">put</span><span style="color: #007700">(</span><span style="color: #0000BB">null</span><span style="color: #007700">,&nbsp;array(</span><span style="color: #DD0000">"column21"&nbsp;</span><span style="color: #007700">=&gt;&nbsp;</span><span style="color: #DD0000">"test&nbsp;data"</span><span style="color: #007700">,&nbsp;</span><span style="color: #DD0000">"column2"&nbsp;</span><span style="color: #007700">=&gt;&nbsp;</span><span style="color: #DD0000">"generating.."</span><span style="color: #007700">));<br /></span><span style="color: #0000BB">$tt</span><span style="color: #007700">-&gt;</span><span style="color: #0000BB">put</span><span style="color: #007700">(</span><span style="color: #0000BB">null</span><span style="color: #007700">,&nbsp;array(</span><span style="color: #DD0000">"column1"&nbsp;</span><span style="color: #007700">=&gt;&nbsp;</span><span style="color: #DD0000">"foobar&nbsp;data"</span><span style="color: #007700">,&nbsp;</span><span style="color: #DD0000">"column2"&nbsp;</span><span style="color: #007700">=&gt;&nbsp;</span><span style="color: #DD0000">"value&nbsp;here"</span><span style="color: #007700">));<br /><br /></span><span style="color: #FF8000">/*&nbsp;Get&nbsp;a&nbsp;new&nbsp;query&nbsp;object&nbsp;*/<br /></span><span style="color: #0000BB">$query&nbsp;</span><span style="color: #007700">=&nbsp;</span><span style="color: #0000BB">$tt</span><span style="color: #007700">-&gt;</span><span style="color: #0000BB">getQuery</span><span style="color: #007700">();<br /><br /></span><span style="color: #FF8000">/*&nbsp;Add&nbsp;a&nbsp;search&nbsp;condition&nbsp;*/<br /></span><span style="color: #0000BB">$query</span><span style="color: #007700">-&gt;</span><span style="color: #0000BB">addCond</span><span style="color: #007700">(</span><span style="color: #DD0000">"column2"</span><span style="color: #007700">,&nbsp;</span><span style="color: #0000BB">TokyoTyrant</span><span style="color: #007700">::</span><span style="color: #0000BB">RDBQC_STROR</span><span style="color: #007700">,&nbsp;</span><span style="color: #DD0000">"something"</span><span style="color: #007700">);<br /><br /></span><span style="color: #FF8000">/*&nbsp;Iterate&nbsp;the&nbsp;results&nbsp;*/<br /></span><span style="color: #007700">foreach&nbsp;(</span><span style="color: #0000BB">$query&nbsp;</span><span style="color: #007700">as&nbsp;</span><span style="color: #0000BB">$key&nbsp;</span><span style="color: #007700">=&gt;&nbsp;</span><span style="color: #0000BB">$value</span><span style="color: #007700">)&nbsp;{<br />&nbsp;&nbsp;&nbsp;&nbsp;echo&nbsp;</span><span style="color: #DD0000">"pk:&nbsp;</span><span style="color: #0000BB">$key</span><span style="color: #DD0000">,&nbsp;columns:&nbsp;"</span><span style="color: #007700">,&nbsp;</span><span style="color: #0000BB">count</span><span style="color: #007700">(</span><span style="color: #0000BB">$value</span><span style="color: #007700">)&nbsp;,</span><span style="color: #DD0000">"\n"</span><span style="color: #007700">;<br />}<br /></span><span style="color: #0000BB">?&gt;</span>
</span>
</code></div>
    </div>

    <div class="example-contents"><p>以上例程的输出类似于：</p></div>
    <div class="example-contents screen">
<div class="cdata"><pre>
pk: 1, columns: 2
pk: 4, columns: 2
</pre></div>
    </div>
   </div>
  </p>
 </div>


 <div class="refsect1 seealso" id="refsect1-tokyotyrantquery.key-seealso">
  <h3 class="title">参见</h3>
  <p class="para">
   <ul class="simplelist">
    <li class="member"><span class="methodname"><a href="tokyotyrantquery.addcond.html" class="methodname" rel="rdfs-seeAlso">TokyoTyrantQuery::addCond()</a> - Adds a condition to the query</span></li>
   </ul>
  </p>
 </div>


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